NCERT Class 7 Science-Acids, Bases and Salts[Natural Indicators Around Us] [NCERT Based General Studies (GS)]: Questions 1 - 4 of 4

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Question 1

NCERT Class 7 Science Acids, Bases and Salts[Natural Indicators Around Us]Turmeric Natural Indicator

Question MCQ▾

If a cooked vegetable falls on the clothes or fabric it leaves a yellow stain on cloth. This yellow stain is due to the presence of:

Choices

Choice (4)		Response
a.	Indicators
b.	Bases
c.	Acids
d.	Turmeric

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Question 2

NCERT Class 7 Science Acids, Bases and Salts[Natural Indicators Around Us]Acid Rain

Question MCQ▾

Which gases from the atmosphere combines with tiny droplets of water in clouds and leads to acid rain:

Choices

Choice (4)		Response
a.	Nitrogen oxide & Sulphur dioxide
b.	Carbon dioxide
c.	Nitrogen oxide
d.	Sulphur dioxide

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Question 3

NCERT Class 7 Science Acids, Bases and Salts[Natural Indicators Around Us]China Rose as Indicator

Question MCQ▾

Indicator is made using a hibiscus flower is:

Choices

Choice (4)		Response
a.	Flower indicator
b.	China rose indicator
c.	Hibiscus indicator
d.	Question does not provide sufficient data or is vague

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Question 4

NCERT Class 7 Science Acids, Bases and Salts[Natural Indicators Around Us]Litmus-A Natural Dye

Question MCQ▾

Litmus is:

Choices

Choice (4)		Response
a.	Indicator
b.	Extracted from lichens
c.	A natural dye
d.	All a., b. and c. are correct

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